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gpu: nvgpu: Read current_volt from vol_rail_get_status

Browse Source 
-Latest ucode doesn't support get_voltage RPC, the data
can be extracted from data obtained by volt_rail_get_status
board_obj cmd. Updating the debugfs node to read the data from
volt_rail_get_status.

JIRA NVGPU-3815

Change-Id: I85f84a757425411725773802c20f05063b222afc
Signed-off-by: rmylavarapu <rmylavarapu@nvidia.com>
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2153387
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
rmylavarapu
2019-07-15 16:30:51 +05:30
committed by mobile promotions
parent 89eec35887
commit e786c3fc35
3 changed files with 31 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/nvgpu/common/pmu/volt/volt_rail.c
View File

@@ -329,6 +329,8 @@ static int volt_rail_obj_update(struct gk20a *g,
/* Updating only vmin as per requirement, later other fields can be added */
volt_rail_obj->vmin_limitu_v = pstatus->vmin_limitu_v;
volt_rail_obj->max_limitu_v = pstatus->max_limitu_v;
volt_rail_obj->current_volt_uv = pstatus->curr_volt_defaultu_v;
return 0;
}
@@ -585,6 +587,32 @@ int nvgpu_volt_get_vmin_vmax_ps35(struct gk20a *g, u32 *vmin_uv, u32 *vmax_uv)
return status;
}
int nvgpu_volt_get_curr_volt_ps35(struct gk20a *g, u32 *vcurr_uv)
{
struct boardobjgrp *pboardobjgrp;
struct boardobj *pboardobj = NULL;
struct voltage_rail *volt_rail = NULL;
int status;
u8 index;
status = nvgpu_volt_rail_boardobj_grp_get_status(g);
if (status != 0) {
nvgpu_err(g, "volt rail get status failed");
return status;
}
pboardobjgrp = &g->perf_pmu->volt.volt_rail_metadata.volt_rails.super;
BOARDOBJGRP_FOR_EACH(pboardobjgrp, struct boardobj*, pboardobj, index) {
volt_rail = (struct voltage_rail *)(void *)pboardobj;
if (volt_rail->current_volt_uv != 0U) {
*vcurr_uv = volt_rail->current_volt_uv;
return status;
}
}
return status;
}
u8 nvgpu_volt_get_vmargin_ps35(struct gk20a *g)
{
struct boardobjgrp *pboardobjgrp;

2
drivers/gpu/nvgpu/include/nvgpu/pmu/volt.h
View File

@@ -87,6 +87,7 @@ struct voltage_rail {
s32 volt_delta_uv[CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES];
u32 vmin_limitu_v;
u32 max_limitu_v;
u32 current_volt_uv;
};
int nvgpu_volt_set_voltage(struct gk20a *g, u32 logic_voltage_uv,
@@ -110,5 +111,6 @@ int nvgpu_volt_rail_volt_dev_register(struct gk20a *g, struct voltage_rail
u8 nvgpu_volt_rail_vbios_volt_domain_convert_to_internal
(struct gk20a *g, u8 vbios_volt_domain);
void nvgpu_pmu_volt_rpc_handler(struct gk20a *g, struct nv_pmu_rpc_header *rpc);
int nvgpu_volt_get_curr_volt_ps35(struct gk20a *g, u32 *vcurr_uv);
#endif /* NVGPU_PMU_VOLT_H */

2
drivers/gpu/nvgpu/os/linux/debug_volt.c
View File

@@ -25,7 +25,7 @@ static int get_curr_voltage(void *data, u64 *val)
u32 readval;
int err;
err = nvgpu_volt_get_voltage(g, CTRL_VOLT_DOMAIN_LOGIC, &readval);
err = nvgpu_volt_get_curr_volt_ps35(g, &readval);
if (!err)
*val = readval;